Although suicide, accomplished by blows against the head of such severity as to wound the contents of the cranium, is of very rare occurrence, it has been observed in a certain number of cases. Such self-murder requires more than ordinary energy, or insensibility to pain, for its execution, and these conditions chiefly obtain among the insane. There are recorded in medical literature a few instances in which the object was attained by blows on the head with a hammer or hatchet, or by driving within the skull a chisel or similar instrument. Certain of these cases, too, consist of persons who have tried to end their existence by other methods, less revolting, and have failed. Death from the self-inflicted wounds, or secondarily from the inflammation consequent upon them, as a rule, has been the final result. In the following paper I purpose to give as complete a series as I